Effects of solar irradiation on thermally driven CO2 methanation using Ni/CeO2-based catalyst
Golovanova, Viktoria (Institut de Recerca en Energia de Catalunya)
Spadaro, Maria Chiara (Institut Català de Nanociència i Nanotecnologia)
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Golovanov, Viacheslav (South-Ukrainian National University)
Rantala Tapio, T. (Tampere University. Department of Physics)
Andreu, Teresa (Institut de Recerca en Energia de Catalunya)
Morante, Joan Ramon (Institut de Recerca en Energia de Catalunya)

Fecha:	2021
Resumen:	Utilization of the renewable energy sources is one of the main challenges in the state-of-the-art technologies for CO recycling. Here we have taken advantage of the solar light harvesting in the thermocatalytic approach to carbon dioxide methanation. The large-surface-area Ni/CeO catalyst produced by a scalable low-cost method was characterized and tested in the dark and under solar light irradiation conditions. Light-assisted CO conversion experiments as well as in-situ DRIFT spectrometry, performed at different illumination intensities, have revealed a dual effect of the incident photons on the catalytic properties of the two-component Ni/CeO catalyst. On the one hand, absorbed photons induce a localized surface plasmon resonance in the Ni nanoparticles followed by dissipation of the heat to the oxide matrix. On the other hand, the illumination activates the photocatalytic properties of the CeO support, which leads to an increase in the concentration of the intermediates being precursor for methane production. Analysis of the methane production at different temperatures and illumination conditions has shown that the methanation reaction in our case is controlled by a photothermally-activated process. The used approach has allowed us to increase the reaction rate up to 2. 4 times and consequently to decrease the power consumption by 20 % under solar illumination, thus replacing the conventional thermal activation of the reaction with a green energy source.
Ayudas:	European Commission 754510 European Commission 754397 Ministerio de Economía y Competitividad SEV-2017-0706 Ministerio de Economía y Competitividad ENE2017-85087-C3 Ministerio de Economía y Competitividad ENE2016-80788-C5-5-R Ministerio de Economía y Competitividad MAT2014-59961-C2 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1246 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-327
Nota:	Altres ajuts: ICN2 is funded by the CERCA Programme / Generalitat de Catalunya.
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	CO2 methanation ; LSPR ; Photothermal effect ; Nickel-ceria catalyst ; DRIFTS
Publicado en:	Applied catalysis. B, Environmental, Vol. 291 (August 2021) , art. 120038, ISSN 0926-3373

DOI: 10.1016/j.apcatb.2021.120038

12 p, 7.5 MB

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